Rails Learning Notes First (building a toy project)

Rails learning is based on the Ruby on Rails tutorial, Agile Web Development with rails 4, API documentation for the official website and a guide from Ruby-china (HTTP/ guides.ruby-china.org/index.html) to learn, as described in the directory sequence of Agile Web development with Rails 4 as a whole.

Good learning starts with creating a project.

Rails comes with a complete set of command-line tools

First create the work directory and enter

Then use the Rails new demo

A project named demo was created

As shown

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When the description is completed as shown

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Project structure as shown

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Is the purpose of the various folders: Graph Source: http://guides.ruby-china.org/index.html

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Perform rake baout to view installation information (only part of the content is intercepted)

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Rake about also detects if there is an installation error

After everything OK, execute rails s (shorthand for Rails server)

Since this virtual environment already has Nodejs installed, there is no JavaScript runtime error to perform properly

The results are as follows:

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Vagrant has set the private_network and specified IP as 192.168.33.10, so the direct access http://192.168.33.10:3000/results are as follows:

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Rails g Controller Say Hello Goodbye (rails generate) for building controllers

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Open DEMO/APP/CONTROLLERS/SAY_CONTROLLER.RB build results as follows

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Rails vs. Request URL

Access Http://192.168.33.10:3000/say/hello after starting the server

Appear:

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, Rails looks for template files with the same name as the controller by default, and opens the template file as shown below

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After modification:

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After refreshing the viewer

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The execution process for a request is as follows: (from the Ruby on Rails tutorial)

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Rails accepts a request, handles it by the controller, decides what to do next, renders the view immediately, returns it to the viewer, or interacts with the model to render the view first. Writing here, a little curious about Django's MTV model, have a good time to ponder.

Add Point dynamic Content

To open the template file, modify the following:

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Refresh the page to show the following:

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Add time to the improved version of the wording

Controller:

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Template:

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The above code shows the principle that the rails convention is larger than the configuration.

Add link

First modify the Demo/app/views/say/goodbye.html.erb results as follows

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The page appears as follows:

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Add a link!

Modify the Hello and Goodbye templates as follows:

Hello

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Goodbye

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Results:

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After clicking:

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The second chapter of the book ends here! Sprinkle the flowers!!

Add:

Methods for generating API documentation locally

Rails New ProjectName

CD ProjectName

Rake Doc:rails # Generate API documentation

This article is from the "7692323" blog, please be sure to keep this source http://7702323.blog.51cto.com/7692323/1596391

Rails Learning Notes First (building a toy project)